[gnome-control-center] Using separate window group to avoid modal shadowing

[Sergey V. Udaltsov <svu src gnome org>]

commit d120490013716e5bf4b856e6a45f410af02db384
Author: Sergey V. Udaltsov <svu gnome org>
Date:   Sun Mar 13 01:04:50 2011 +0000

    Using separate window group to avoid modal shadowing
    
    The idea by mclasen. Non-modal preview for modal "add layout" popup

 panels/region/gnome-region-panel-xkbltadd.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/panels/region/gnome-region-panel-xkbltadd.c b/panels/region/gnome-region-panel-xkbltadd.c
index be12ca7..cddb7d2 100644
--- a/panels/region/gnome-region-panel-xkbltadd.c
+++ b/panels/region/gnome-region-panel-xkbltadd.c
@@ -129,6 +129,13 @@ xkb_layout_chooser_response (GtkDialog * dialog,
 								  G_CALLBACK
 								  (xkb_preview_destroy_callback),
 								  NULL);
+						/* Put into the separate group to avoid conflict
+						   with modal parent */
+						gtk_window_group_add_window
+						    (gtk_window_group_new
+						     (),
+						     GTK_WINDOW
+						     (preview_dialog));
 					};
 					gkbd_keyboard_drawing_dialog_set_layout
 					    (preview_dialog,